on the foreign-policy side presidents have even more power. the president plays a far larger role in the determination of u.s. policy and congress plays a far smaller role than the framers intended. the recent illustration is president obama decided our military would be involved in intervening in libya would be his decision even though congress is supposed to decide when we send troops into battle. but obama and many presidents have decided on their own without waiting for congress. presidents also reach agreements with other countries without congressional participation unilaterally decide about terminating a treaty when we change from recognizing taiwan as a government to mainland china. it was president carter who unilaterally terminated the mutual defense in taiwan. presidents decide on their own whether allowing u.s. citizens to travel abroad. it was a presidential decision. he also revived our immigration policy. when congress failed to create a path for young immigrants to be brought and -- president implemented his own d.r.e.a.m. act.